Added tools.go file

Author: ilaleksin

Makefile

@@ -137,14 +137,8 @@ docker-registry-secret: check-env-docker-credentials operator-namespace
 
 controller-gen:  ## download controller-gen if not in $PATH
 ifeq (, $(shell which controller-gen))
-	@{ \
-	set -e ;\
-	CONTROLLER_GEN_TMP_DIR=$$(mktemp -d) ;\
-	cd $$CONTROLLER_GEN_TMP_DIR ;\
-	go mod init tmp ;\
-	go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.2.5 ;\
-	rm -rf $$CONTROLLER_GEN_TMP_DIR ;\
-	}
+	@echo Installing tools from tools.go
+	@cat tools.go | grep _ | awk -F'"' '{print $$2}' | xargs -tI % go install %
 ifeq (, $(GOBIN))
 GOBIN=$(GOPATH)/bin
 endif

config/crd/bases/rabbitmq.com_rabbitmqclusters.yaml

@@ -10,7 +10,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.2.5
+    controller-gen.kubebuilder.io/version: v0.4.0
   creationTimestamp: null
   name: rabbitmqclusters.rabbitmq.com
 spec:

tools.go

@@ -0,0 +1,7 @@
+// +build tools
+
+package main
+
+import (
+	_ "sigs.k8s.io/controller-tools/cmd/controller-gen"
+)